[MacPorts] #44171: fatsort: add livecheck and fix whitespace.

[MacPorts]

#44171: fatsort: add livecheck and fix whitespace.
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 Reporter:  ionic@…              |      Owner:  macports-tickets@…
     Type:  enhancement          |     Status:  new
 Priority:  Normal               |  Milestone:
Component:  ports                |    Version:
 Keywords:  haspatch maintainer  |       Port:  fatsort
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 Add missing livecheck commands.

 Unfortunately, the SF RSS feed doesn't seem to be formatted like for other
 projects, so `livecheck.type sourceforge` isn't enough here.


 Also fix a whitespace issue introduced by me with the last patch.

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Ticket URL: <https://trac.macports.org/ticket/44171>
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